Genuine RJ-45 USB 2.0 Ethernet LAN Adapter for Lenovo U2L100P-Y1 Network Standards: IEEE 802.3: 10Base-T / IEEE 802.3u: 100Base-T Ethernet: 10Mbps (Half/Full Duplex) Fast Ethernet: 100Mbps (Half/Full Duplex) Data Bus: USB 2.0 (1.1 compliant) LED Indicators: Power, Link